mem: make base address hint OS specific
[dpdk.git] / lib / librte_eal / common / hotplug_mp.h
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2018 Intel Corporation
3  */
4
5 #ifndef _HOTPLUG_MP_H_
6 #define _HOTPLUG_MP_H_
7
8 #include "rte_dev.h"
9 #include "rte_bus.h"
10
11 #define EAL_DEV_MP_ACTION_REQUEST      "eal_dev_mp_request"
12 #define EAL_DEV_MP_ACTION_RESPONSE     "eal_dev_mp_response"
13
14 #define EAL_DEV_MP_DEV_NAME_MAX_LEN RTE_DEV_NAME_MAX_LEN
15 #define EAL_DEV_MP_BUS_NAME_MAX_LEN 32
16 #define EAL_DEV_MP_DEV_ARGS_MAX_LEN 128
17
18 enum eal_dev_req_type {
19         EAL_DEV_REQ_TYPE_ATTACH,
20         EAL_DEV_REQ_TYPE_DETACH,
21         EAL_DEV_REQ_TYPE_ATTACH_ROLLBACK,
22         EAL_DEV_REQ_TYPE_DETACH_ROLLBACK,
23 };
24
25 struct eal_dev_mp_req {
26         enum eal_dev_req_type t;
27         char devargs[EAL_DEV_MP_DEV_ARGS_MAX_LEN];
28         int result;
29 };
30
31 /**
32  * Register all mp action callbacks for hotplug.
33  *
34  * @return
35  *   0 on success, negative on error.
36  */
37 int
38 eal_mp_dev_hotplug_init(void);
39
40 /**
41  * This is a synchronous wrapper for secondary process send
42  * request to primary process, this is invoked when an attach
43  * or detach request is issued from primary process.
44  */
45 int eal_dev_hotplug_request_to_primary(struct eal_dev_mp_req *req);
46
47 /**
48  * this is a synchronous wrapper for primary process send
49  * request to secondary process, this is invoked when an attach
50  * or detach request issued from secondary process.
51  */
52 int eal_dev_hotplug_request_to_secondary(struct eal_dev_mp_req *req);
53
54
55 #endif /* _HOTPLUG_MP_H_ */